摘要
基于评价区自然资源现状,利用Logistic回归模型和GIS技术对松嫩平原西北部扎兰屯地区土地利用进行适宜性评价.结果表明:影响林地分布的指标主要为土层厚度、降雨量、坡向、坡度、高程;影响草地分布的指标主要为土层厚度、道路距离、坡向;影响耕地分布的指标主要为坡度、土层厚度、坡向、人口密度、高程.林地、耕地、草地AUC值分别为0.961、0.938、0.755,拟合程度良好.草地适宜性分区中,高度适宜区域面积为3 375.85 km2,占总面积的20.11％;耕地适宜性分区中,高度适宜区域面积为3 566.36 km2,占总面积的21.25％;林地适宜性分区中,高度适宜区域面积为5 449.91 km2,占总面积的32.47％.
Abstract
Based on the current situation of natural resources in Zhalantun area of northwestern Songnen Plain,the land use suitability in the area is evaluated with logistic regression model and GIS technology.The results show that soil thickness,rainfall,slope aspect,slope gradient and elevation are the main indexes affecting the distribution of forest land;soil thickness,distance from roads and slope aspect for the distribution grassland;while slope gradient,soil thickness,slope aspect,population density and elevation,for the distribution of cultivated land.The AUC values of forest land,cultivated land and grassland are 0.961,0.938 and 0.755,respectively,with good fitting degree.The highly suitable area in the grassland,cultivated land and forest land suitability zoning is 3 375.85 km2,3 566.36 km2 and 5 449.91 km2,accounting for 20.11％,21.25％,and 32.47％of the total area,respectively.
维普
万方数据